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calculati : 9!*4! supra lui 16!

Răspuns :

[tex] \frac{9!*4!}{16!} = \frac{9!*1*2*3*4}{9!*10*11*12*13*14*15*16} = \frac{1*2*3*4}{10*11*12*13*14*15*16} = \frac{1}{10*11*12*13*14*3*2} [/tex]
=[tex] \frac{1}{1441440} [/tex]